Sulky-plow.



No. 730,744. i PATENTED J'UNE'Q, 1903.

- S. C. COBB.

I SULKY PLOW. APPLICATION FILED JAN. 86, 1902.

H0 MODEL.

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fPatented June 9, 1903.

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FATENT SAMUEL O. COBB, OF JANESVILLE, WISCONSIN.

SU LKY-PLOW.

SPECIFICATION forming part of Letters Patent No. 730,744, dated June 9, 1903.

Application filed January 25, 1902. Serial No. 91,145. (No model.)

T0 (10% whom, it nuty concern..-

Be it known that I, SAMUEL C. COBB, a citizen of theUnited States,residing at Janesville, in the county of Rock and State of Wisconsin, have invented certain new and usefulImprovements in Sulky-Plows; and I dohereby declare the following tobe afull, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to sulky-plows, listers, and other devices of a similar character in which a plow-beam is mounted upon the central cranked portion of an axle and adapted to be raised and lowered and moved forward and backward bya corresponding movement of the cranked portion of said axle without necessitating the raising and lower-' ing of the frame; and my invention has for its primary object to provide improved means for mounting and relatively arranging the coacting elements comprising the sectorgears and segmental rack; and a further object is to provide improved registering means for the sector-gears.

In the drawings, Figure l is a side elevation of my invention applied to the main frame of a sulky-plow or lister. side elevation of a bracket adapted to be attached to the main frame ofsuch a machine. Fig. 3 is a transverse section of said bracket, taken on the broken line 1 1 of Fig. 2.

As illustrated in the drawings, the main frame of my device consists of a transverse arch A, having a stub tongue or pole B secured thereto, a plate C, interposed between said tongue and arch, and braces D, secured at their forward ends to the stub-tongue and at their rear ends to the lower portions or ends of the arch A by means of bolts d.

E designates the axle, cranked at its center intermediate the sides of the frame, which latter is mounted'on the en'dsE of the axle, one of such ends being journaled in a bearing f, formed on the lower end of a bracket F, which bracket may be secured to the arch of said main frame in any suitable manner, but preferably by means of a bolt G extending through a boss or hub I-I, formed on said bracket. A sector-gear I is loosely mounted upon said boss or hub, which is made slightly thicker than the hub of said gear, so that Fig. 2 is a.

when a washer g and nut g are applied to the bolt G at the end of said boss the hub of said sector-gear will rotate freely thereon. A lever J is attached to said sector-gearI and provided with a latch M, adapted to engage the teeth of a segmental rack K, formed on the upper portion of the bracket F, and to be held in engagement with said teeth by means of a spring L. The upper end of said latch moves freely in an eyeboltj, secured to said lever, and is connected with a latch-lever N by means of a rod n. Asector-gear O is rigidly secured to one of the ends E of the axle and engages with the sector-gear I, mounted on the bracket F. The sector-gear O is provided with a time-lug 0, which registers with and engages a notch 01, formed on the opposite sector-gear I, and enables the correspond: ing teeth of said sector-gear to be readily set in mesh relatively to each other, so that the lever J may be conveniently controlled by the user to raise orlower the crank of the axle E to the extent desired. The movement of the lever J is limited by the stops it, formed on the ends of the segmental rack K.

The advantages of my invention are apparent. It will be noted that the bracket F, constitu ting one of the bearings for the axle and carrying the upper sector-gear I, renders it possible toso adjustthebracketlongitudinally of the axle as to insure the effective engage ment ofsuch sector-gear I with the gear 0, rigidly secured to the axle. The bearing f being adjustable with relation to the arch may be correctly positioned on the axle without changing the position of the arch. These advantages are obviously not present when the bracket is formed integral with or rigidly held to the transverse arch.

What I claim as new, and desire to secure by Letters Patent, is I l. The combination with the main frame having a transverse arch, of an axle cranked intermediate its ends, the ends of said arch being mounted on the ends of the axle, a bracket having a segmental rack, said bracket being secured to the arch, and having a bearing forsaid axle,.a sector-gear rigidly secured to one of the ends of the axle, an engaging sector-gear loosely mounted upon said bracket, and a hand-lever connected with said engaging sector-gear and provided with a springregistering means on each of said sector-gears, and a han d-lever connected with said engaging sector-gear and provided with a springlatch adapted to engage said segmental rack, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

SAMUEL O. COBB.

latch adapted to engage said segmental rack, I substantially as set forth.

2. The combination with the main frame having a transverse arch, of an axle cranked intermediate its ends, the ends of said arch being mounted on the ends of the axle, a bracket havingasegmental rack, said bracket being secured to the arch andhaving a bearing for said axle, a sector-gear rigidly secured VVi-tnesses: to one of the ends of the axle, an engaging sec- GEO. H. DRUMMOND, tor-gear loosely mounted upon said bracket, J. L. HAY. 

